var demo1 = new Vue({
    el:"#demo1",
    data:{
        message:"测试message",
        name:"我的名字",
        reverse:"Hello World !!!",
        buttonName:"逆转消息",
        age:30,
        key:"start",
        changeColor:false,
        changeLength:false,
    },
    methods:{
        reverseButton:function () {
            this.reverse = this.reverse.split('').reverse().join('')
        },
        add:function () {
            this.age++
        },
        subtract:function () {
            this.age--
        },
        keyAdd:function () {
            this.key = this.key+"1"
        }
    }
})